If a fertilised chicken egg is not sat on how long will it stay fresh to eat it?

You can't eat a fertilized chicken egg. It's important to understand the difference between fertilized eggs and regular eggs:

* Fertilized eggs: These are eggs that have been incubated by a hen. The embryo inside is developing and will eventually hatch into a chick. These are not typically available for consumption.

* Unfertilized eggs: These are the eggs you buy at the grocery store. They haven't been incubated, and the yolk contains no developing embryo. These are safe to eat.

How long can unfertilized eggs stay fresh?

The freshness of an unfertilized egg depends on storage conditions:

* Refrigerated: Unfertilized eggs can be kept in the refrigerator for 3-5 weeks, but they will start to lose quality over time. The yolk will become thinner, and the white will become more watery.

* Room temperature: Eggs should not be stored at room temperature for long periods. They will spoil much faster than in the refrigerator.

Important Note: It's crucial to always check the date on the egg carton and discard any eggs that have passed their "sell by" date. This will help ensure the eggs are safe to eat.